Troubleshooting
Woolly Lavender problems — and how to fix them
Woolly Lavender (Lavandula lanata) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Root and crown rot in wet winters
The primary cause of loss in UK gardens; sitting water at the crown during cold spells kills quickly. Grow in raised beds or containers with extra grit, and shelter from prolonged winter rain.
Shab / Phoma lavandulae
A fungal die-back that blackens individual branches; more prevalent in warm, humid summers. Remove affected stems promptly to healthy wood and improve air circulation.
Prevent woolly lavender problems before they start
Most woolly lavender issues are care-mismatch, not bad luck. Dial in the basics:
Woolly Lavender problems — FAQ
Why is my woolly lavender root and crown rot in wet winters?
The primary cause of loss in UK gardens; sitting water at the crown during cold spells kills quickly. Grow in raised beds or containers with extra grit, and shelter from prolonged winter rain.
Why is my woolly lavender shab / phoma lavandulae?
A fungal die-back that blackens individual branches; more prevalent in warm, humid summers. Remove affected stems promptly to healthy wood and improve air circulation.